02-19-2014, 09:25 PM
Yeah, Ed. Snow in the air a couple of times today. Almost motorcycle season.
Steve, I'm keeping in mind that I can add one or both of the additional spring features if mine needs something more.
Actually, after I got home from work today, I figured I'd better take the holder for a test run. I poked through the big box of shaped 3/8" cutters that came with the lathe and picked one to try.
It has quite a bit of top rake. A simple round-nose 1/4" wide. I set the speed at 195 RPM, to suit the 1 1/4" HRS stock.
I got pretty aggressive cranking the crossfeed in. It's kind of scary to see your toolholder suddenly bend down and back up again when the tool digs in. I went in about 3/16".
It doesn't eliminate chatter as promised in some writeups and videos, but maybe a neutral top rake would change that. I did manage to clean up some of the chatter by feeding it in to make contact, then let it spin for a while. The flex allows it to feed the edge in gently until it's nearly clean.
While it doesn't eliminate chatter, I think it will be useful when I need to do some deep or heavy form cutting. I may not use it as much as the tangential toolholder, but it will be a welcome addition to the setup.
Steve, I'm keeping in mind that I can add one or both of the additional spring features if mine needs something more.
Actually, after I got home from work today, I figured I'd better take the holder for a test run. I poked through the big box of shaped 3/8" cutters that came with the lathe and picked one to try.
It has quite a bit of top rake. A simple round-nose 1/4" wide. I set the speed at 195 RPM, to suit the 1 1/4" HRS stock.
I got pretty aggressive cranking the crossfeed in. It's kind of scary to see your toolholder suddenly bend down and back up again when the tool digs in. I went in about 3/16".
It doesn't eliminate chatter as promised in some writeups and videos, but maybe a neutral top rake would change that. I did manage to clean up some of the chatter by feeding it in to make contact, then let it spin for a while. The flex allows it to feed the edge in gently until it's nearly clean.
While it doesn't eliminate chatter, I think it will be useful when I need to do some deep or heavy form cutting. I may not use it as much as the tangential toolholder, but it will be a welcome addition to the setup.
Mike
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.
If you can't get one, make one.
Hawkeye, proud to be a member of MetalworkingFun Forum since Jan 2013.